A DCS Q Co., Ltd. - PLC and DCS Industrial Control Equipment Wholesale
Technical FAQs
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How many discrete inputs does the SPDSI14 support?
It supports 16 independent digital input channels in one module. -
What voltage level does it use for logic inputs?
Designed for 24 VDC nominal logic voltage common in industrial control. -
Is the module compatible with both sinking and sourcing devices?
Yes — input circuitry is compatible with both sinking and sourcing field devices. -
What is the typical response time?
Response time is ≤ 5 ms per channel, suitable for time-critical discrete signaling. -
Does it require isolation?
Yes — the module provides full channel isolation to protect against noise and ground faults. -
Can this module operate in harsh environments?
Yes — designed for industrial temperature and humidity ranges. -
How is it mounted in a control panel?
SPDSI14 supports both DIN-rail and rack mounting, offering flexible installation. -
Does it provide status indicators?
Yes — channel LED indicators help visualize input state for easy troubleshooting. -
Is configuration software needed?
Yes — configuration within the host control or DCS system is typical for channel mapping. -
Can this replace older Bailey digital input modules?
Yes — backward compatibility is supported in most legacy Bailey architectures.
Introduction
The ABB Bailey SPDSI14 16-channel Digital Input Module is designed for high-performance discrete signal interfacing in modular automation networks. Offering 16 field-proven channels in a single rack-mountable unit, SPDSI14 delivers dependable detection of digital status changes with fast response and strong noise immunity.
Ideal for large distributed control systems where precision, flexibility and durability are critical, this module supports seamless integration within Bailey™ architectures. Whether monitoring limit switches, proximity sensors, or safety interlocks, the SPDSI14 ensures consistent, stable data acquisition, helping protect operations and improve system responsiveness.
Technical Specifications
| Specification | Detail |
|---|---|
| Product Name | ABB Bailey SPDSI14 |
| Module Type | 16-channel Digital Input Module |
| Discrete Inputs | 16 Channels |
| Input Type | Sinking / Sourcing Compatible |
| Logic Voltage | 24 VDC Nominal |
| Input Current | 6–12 mA per Channel |
| Response Time | ≤ 5 ms |
| Isolation | Full Channel Isolation |
| Operating Temperature | -20 °C to +70 °C / -4 °F to +158 °F |
| Storage Temperature | -40 °C to +85 °C / -40 °F to +185 °F |
| Humidity | 5 % to 95 % Non-Condensing |
| Mounting | DIN-rail / Rack Compatible |
| Weight (Approx.) | 0.48 lb / 0.22 kg |
| Dimensions (H × W × D) | 1.6 × 4.2 × 5.8 inches |
| Dimensions (Metric) | 40 × 107 × 147 mm |
